Space-Based Motion Estimators—Evaluation With the First RADARSAT-2 MODEX Data

Synthetic aperture radar (SAR)-based motion estimation algorithms, which have been developed and validated for airborne SAR data, are now being extended to the RADARSAT-2 Moving Object Detection Experiment (MODEX). Several modifications of the classical along-track interferometry (ATI) approach are considered. Some of the first MODEX results are presented, demonstrating the estimation of target position and velocity from a commercial satellite using ATI methods.